Flexible Super Hard Teeth Grinding Night Guard

In stock

The Flexible Super Hard Dental Night Guard is the strongest night guard available. Protect your mouth from severe teeth grinding and clenching with this teeth guard. Order online and take the impression at home saving hundreds over going to the dentist. Free Shipping. 30-Day Warranty. 100% Satisfaction Guaranteed. 

Custom Teeth Grinding Night Guard - Flexible Super Hard Teeth Grinding Guard

Woman waking up happy with a night guard

The best custom night guards for teeth grinding

We all have our different stories. Maybe you've dealt with teeth grinding your entire life but haven't found the solution to it yet. Perhaps you've recently started grinding your teeth due to stress in your life. Maybe you've woken up with intense jaw pain or consistent morning headaches and you've done your research and discovered that you likely grind your teeth at night. Whatever the case, you've come to the right place for your solution. With over a decade of crafting custom night guards for teeth grinding, Sporting Smiles offers a variety of both day and night teeth grinding guards to prevent further damage and to restore the peaceful nights and mornings that you seek. Stopping teeth grinding starts here!

This unique hard flexible dental night teeth guard is constructed using a new advanced material that is flexible, but extremely dense. The flexibility of this teeth grinding mouth guard makes it work well for teeth clenching and the density can hold up to the most severe teeth grinding. This is the only night guard that our consulting dentist prescribes in his practice. The hard flexible night guard can be created for either the upper or lower teeth but will provide the same level of protection.

100% Satisfaction Guaranteed.

This is the same product you would get from a dentist\orthodontics without the cost and the need for a dental visit.

The Flexible Super Hard Teeth Grinding Guard Night Guard

Benefits of the Night Guard Super Hard Flexible

  • Our No. 1 Selling Night Guard
  • Custom Teeth Guards Are Developed By Professional Lab Techs For Superior Fit And Protection
  • 3mm Thin Made From Clear EVA Material
  • Sleek And Compact Tight Fit For A Comfortable Experience
  • Helps prevent Jaw Pain, Teeth-Grinding, And Morning Headaches
  • Instant Results

Why is Custom Better?

  • Perfect Fit - Made from an exact impression of your teeth allowing for a tight fit guard that will provide excellent protection without the clumsy and bulky feeling. 
  • Best Protection Possible - Get the strongest material for defense against the most severe cases of teeth-grinding and clenching.
  • Unique Solutions - Not everyone grinds or clenches the same way so picking the right material and style of guard that best suits you is key for instant results. We can help you select the best night guard for you.
  • Long Lasting - Our teeth-grinding mouth guards are tested for quality before being shipped out resulting in them lasting longer than over-the-counter guards giving you a cost-effecient guard that lengthen the time between replacements. 
woman smiling about to put in a day grinding guard

Customer Reviews

"Does it really work?"

We see this question come up a lot with potential customers that have been burned in the past by other online night guards. Sure, we could tell you how great our dental products are but we'd rather have our REAL customers discuss our teeth grinding mouth guards. With thousands of 5-Star reviews, Sporting Smiles can be trusted for your teeth grinding guard and smile. 

How it Works:

1.       We will ship the self-impression Kit.
2.       Watch the video and take impressions at home. Mail back.
3.       We’ll make the custom teeth-grinding guard and ship it back to you.

With your order you will receive:

2 Sets of impression material (1 spare)
1 Adjustable impression trays and return bags
1 Instruction pamphlet with the return form
1 Prepaid postage return label (domestic orders only)

In your return package you will receive: 

1 Custom Upper Hard Flexible Night Guard

1 Storage Case


Free 3-way Shipping within the USA. (Return label not included for International)
Expedited orders are shipped priority mail (2-3 days) all 3-ways, and rushed in the lab. Approximately 10-15 days, depending on shipping.

Watch Instructions For Our Easy Impression Kit

DIY Sporting Smiles Impression Kit

Complete Kit Includes

· Impression Material (3 Sets)

· Adjustable Impression Tray (2)

· Return Bags (2)

· Instruction Pamphlet

· Return Form

· Prepaid Postage Return Label (USA Only)

Sporting Smiles Putty

Easy DIY Custom Compression Kit

We’ve done our research when it comes to perfecting the best custom fitting online teeth-grinding guards so much that our adjustable impression tray is patented. That's right, you are receiving the first adjustable molding tray for DIY custom dental products.

The Flexible Super Hard Teeth Grinding Guard Night Guard

The Best All-Around Teeth Grinding-Guard

Whether you are a heavy grinder or lock your jaw up at night, the custom super hard flexible guard is your premiere choice for protection. We recommend it so much that even if you don't know whether you clench or grind, we are confident that it will provide instant relief to your sleep cycle. 

Woman sleeping peacefully with night guard

Repeat Customers

Our affordable teeth-grinding guards are so successful with helping our customers sleep peacefully through the night that when the time comes to reorder a new guard we have over a 97% retention rate for customers who have purchased a previous night guard with Sporting Smiles. If you reorder within a year you can save up to 35% on a new guard. 

Frequently Asked Questions:

Is it hard to make the impressions at home? - We’ve helped thousands of people successfully make their at-home impressions using our kit. Because everyone’s mouth is different, it’s important to have an impression tray that adjusts. In 2011, we patented our adjustable tray to make it even easier to get a perfect impression. We include an extra set of impression material, just in case. You’ll want to watch the video and make sure you’ve got everything prepared properly. But in our experience, making the impression at home is much easier than scheduling an appointment, driving across town, sitting in a waiting room, and spending hundreds of extra dollars to have your orthodontist do this for you.

How Long Does It Take to get my custom teeth grinding guard? - As soon as your impression is received, it will take approximately 10 business days before your new appliance is completed and shipped. International shipping can be a lengthy process. Please be patient when ordering internationally. (We ship same day orders Monday through Friday with orders placed before 3 PM CST)

What if I mess up my impression? If the impression material hardens or the impression doesn't come out well, we will send you out a replacement putty free of charge, the tray is reusable. If the kit is sent in and the impression(s) were bad it would be a 15 dollar charge to cover shipping you another impression kit.

Are there other names for teeth-grinding guards? Yes! It might depend on where you live or how old your dentist is but the terminology that revolves around teeth grinding guards can be confusing so we'll make it easy for you. Teeth Grinding Guards, Night Time Guards, Day Time Guards, Bite Guards, Occlusal Splint, Bit Splint, Sleep Guard, Bruxism Guards are all the same thing! They are just different terms used for guards to prevent teeth grinding.

What are the symptoms of teeth grinding? You may be grinding your teeth or clenching your jaw at night without even knowing it. Symptoms of teeth grinding include:

1. Waking up with jaw pain 

2. A noticeable shift in your teeth

3. You suffer from stress, anxiety, or depression

4. Your teeth are sore or hurt 

5. You've recently had teeth removed

If you sleep with a partner, they may be able to spot other symptoms of teeth-grinding including hearing you snore often, hearing a grinding or clicking noise coming from your mouth at night, and witnessing you tossing and turning in bed. 

Are your products BPA Free? - Yes! All our products (retainers, whitening trays, night mouth guards, and athletic mouthguards) are BPA, BPS, DEHP, and latex-free.

Does Sporting Smiles accept HSA or Flex payment options? Yes! You can use your HSA card and if any special invoicing is required Sporting Smiles will work with your insurance company to complete the transaction. Teeth-grinding guards are an excellent choice to spend your HSA account on. Teeth-grinding is a serious oral health issue and without proper care or a solution can lead to expensive surgery or permanent facial reconstruction as the jaw bone shifts. 

Can I add whitening trays to my night guard order?


You will receive enough supplies to make an impression of your upper and lower teeth even though you ONLY ordered 1 upper or 1 lower for your Night Guard as you WHITEN your upper and lower teeth. 

Whitening Trays are made with different materials than the night guard. Whitening Bleach can not be used on night guards, only custom whitening trays.

Why is Sporting Smiles so much cheaper than my dentist? - To purchase a typical retainer in the past, your dentist would have to take an impression at his office and send it out to a dental laboratory for construction. This requires using valuable office time which needs to be incorporated into the cost of the guard. Because we operate our laboratory and are using a self-impression method we can dramatically reduce the cost of your retainer.

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